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Both read SPSS data files and run SPSS-style syntax. PSPP is free GNU software covering core statistics; OrcStat adds 148 procedures, a private AI statistician and APA 7 results.
About PSPP
PSPP is free software from the GNU project, designed as a replacement for SPSS. It reads SPSS syntax and data files, works through a graphical interface or syntax commands, and covers descriptive statistics, t-tests, ANOVA, linear and logistic regression, factor and reliability analysis, and non-parametric tests.
From the GNU PSPP project, checked October 2026.
Side by side
| OrcStat | PSPP | |
|---|---|---|
| Price | Pro Personal $50 a month billed annually; students $24 a month; 14-day free trial | Free |
| Licence | Commercial | Free software (GNU GPL) |
| SPSS syntax | A large subset of SPSS-style syntax, with a copilot that converts the rest | SPSS-compatible syntax |
| SPSS files | .sav and .zsav (read and write), .por | SPSS-compatible data files |
| Procedures | 148, including mixed models, survival, SEM, IRT, Complex Samples, custom tables and Bayesian statistics | Core statistics: descriptives, t-tests, ANOVA, linear and logistic regression, factor and reliability analysis, non-parametric tests |
| AI assistance | Local AI statistician that plans analyses, checks assumptions and drafts results; models run on your own computer or network | None listed on its website |
| Output | APA 7 tables and drafted results; Word, PDF, PowerPoint, Excel, HTML and more | Text, PDF, OpenDocument, HTML and other formats |
An honest answer
Comparing with SPSS instead? See OrcStat as an SPSS alternative.
Most of it will. OrcStat runs a large subset of SPSS-style syntax directly, and the copilot converts commands it doesn't run as written.
Advanced methods such as mixed models, survival analysis, SEM and Complex Samples, a private AI statistician, APA 7 tables and results drafting, and encrypted projects.
No. PSPP is a GNU project; OrcStat is made by Trifecta Labs LLC.
PSPP is developed by its own team and is not affiliated with OrcStat. Facts about PSPP come from its official website; tell us at support@orcstat.com if anything is out of date.